MUSIC / Upbeat: Coda

'THIS is so sensual, so uncomplicated . . . beautiful]': thus Clare Short MP on Desert Island Discs this week, announcing her late discovery of classical music. The composer who converted her was Arnold Schoenberg, no less, thanks to a Birmingham performance of his monumental choral epic Gurrelieder. It was her if-you- could-have-only-one choice, as well. Who will be the first castaways to hang on to their Boulez and Stockhausen?